package com.sjf.config;

import com.github.xiaoymin.knife4j.spring.annotations.EnableKnife4j;
import com.sjf.common.JacksonObjectMapper;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.cbor.MappingJackson2CborHttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

import java.util.List;

/**
 * 静态资源映射过滤
 *
 * @author <huangtang>
 * @since 2022/4/25 11:02
 **/
@Configuration
@EnableSwagger2
@EnableKnife4j
public class WebMvcConfig extends WebMvcConfigurationSupport {

    /**
     * 设置静态资源映射
     * @param registry
     */
    @Override
    protected void addResourceHandlers ( ResourceHandlerRegistry registry ) {
        //将/backend/**下的映射到classpath下的/backend/
        registry.addResourceHandler("doc.html").addResourceLocations("classpath:/META-INF/resources/");
        registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");
        registry.addResourceHandler ("/backend/**").addResourceLocations ("classpath:/backend/");
        registry.addResourceHandler ("/front/**").addResourceLocations ("classpath:/front/");
    }

    /**
     * 扩展mvc框架的消息转换器
     * @param converters
     */
    @Override
    protected void extendMessageConverters ( List<HttpMessageConverter<?>> converters ) {
        //创建消息转换器对象
        MappingJackson2HttpMessageConverter result = new MappingJackson2HttpMessageConverter ();
        //设置对象转换器
        result.setObjectMapper (new JacksonObjectMapper());
        //将消息转换器设置到mvc容器中
        //index 为 优先级 ，0为最高
        converters.add (0,result);
    }

    @Bean
    public Docket createRestApi() {
        // 文档类型
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.sjf.reggie.controller"))
                .paths(PathSelectors.any())
                .build();
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder ()
                .title("瑞吉外卖")
                .version("1.0")
                .description("瑞吉外卖接口文档")
                .build();
    }
}
